A message of support is displayed at the wall of hope for the missing passengers of the Malaysian Airlines plane at Kuala Lumpur International Airport viewing gallery, Malaysia, 18 March 2014.

A message of support is displayed at the wall of hope for the missing passengers of the Malaysian Airlines plane at Kuala Lumpur International Airport viewing gallery, Malaysia, 18 March 2014. (AHMAD YUSNI / EPA)

During that time crews have been hunting for missing Malaysia Airlines Flight MH370, those touched, both directly and indirectly, have expressed their grief and concern in many ways -- some simple, some extravagantly artistic.